Kyosai weather in September

In September, Kyosai sees average daytime highs of 24°C and overnight lows near 22°C, with 174 mm of rain across 8.9 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 22°C by the end. The sky is clear or mostly clear about 38% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 h 48 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Kyosai's 8th-clearest and 5th-windiest month. For the whole year in context, see Kyosai's year-round climate.

Daytime high
24°
3rd warmest
Overnight low
22°
10th coldest
Rainfall
174 mm
8.9 wet days
Daylight
12 h 12 min
6:14 AM – 6:26 PM
Cloud cover
56%
8th clearest
Wind
22 km/h
5th windiest
Solar energy
4.39 kWh/m²
Travel score
7.0
out of 10

Kyosai is city in Gyeongsangnam-do, South Korea.

Density
180/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 25°C in the first days to 22°C by the end.

A typical September day in Kyosai reaches about 24°C in the afternoon and slips back to 22°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 25°C. Set against its neighbours, September runs about 2°C cooler than August and about 4°C warmer than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12524
22524
32523
42523
52523
62523
72523
82523
92523
102523
112422
122422
132422
142422
152422
162422
172422
182422
192321
202321
212321
222321
232321
242321
252320
262320
272220
282220
292220
302220

How September really feels in Kyosai

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Kyosai weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan / 404.69.91.2
Feb / 505.510.71.7
Mar11° / 977.911.72.9
Apr14° / 12°1338.512.94.3
May17° / 15°1408.213.85.8
Jun20° / 19°1859.614.36.2
Jul24° / 23°25412.514.16.4
Aug26° / 25°19812.213.36.4
Sep24° / 22°1748.912.27.0
Oct20° / 17°75511.17.2
Nov15° / 11°575.510.25.1
Dec / 374.39.72.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 49%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14357
24456
34456
44456
54555
64555
74654
84753
94852
104852
114951
125050
135050
145050
155149
165248
175248
185347
195347
205347
215446
225446
235446
245545
255545
265545
275644
285644
295644
305644

Chance of precipitation in September

Any precipitation

Kyosai gets around 174 mm of rain over 8.9 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 37% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
137
237
336
436
535
635
734
834
934
1034
1133
1233
1332
1432
1531
1630
1730
1829
1928
2027
2127
2226
2326
2425
2524
2624
2723
2823
2922
3021

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the muggy band about 33% of days. Sticky, muggy-or-worse air turns up on roughly 56% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10011363320
20112373218
30113393116
40114393114
50215403013
60217412911
7131841289
8131942278
9142142267
10152241256
11162441245
12272540234
13282639223
14392837212
153102936202
164113035192
174133134171
185143133161
196153231151
206163330131
217183429121
228193428111
239203426101
241022342591
251123342481
261224342270
271426332160
281527332050
291728321950
301829321840

Wind in September

Winds average 22 km/h in September.

Across September, daily wind ranges from about 21 km/h on the calmest days to 22 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
121breezy
221breezy
321breezy
421breezy
521breezy
621breezy
721breezy
821breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1422breezy
1522breezy
1622breezy
1722breezy
1822breezy
1922breezy
2022breezy
2122breezy
2222breezy
2322breezy
2422breezy
2522breezy
2622breezy
2722breezy
2822breezy
2922breezy
3021breezy

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 48 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over September. Sunrise moves from 6:02 AM to 6:24 AM, and sunset from 6:48 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:026:48
212.76:036:47
312.76:046:46
412.76:056:44
512.66:056:43
612.66:066:41
712.56:076:40
812.56:086:38
912.56:086:37
1012.46:096:35
1112.46:106:34
1212.46:116:32
1312.36:116:31
1412.36:126:29
1512.36:136:28
1612.26:146:26
1712.26:146:25
1812.16:156:23
1912.16:166:22
2012.16:176:20
2112.06:176:19
2212.06:186:17
2312.06:196:16
2411.96:206:14
2511.96:206:13
2611.86:216:12
2711.86:226:10
2811.86:236:09
2911.76:236:07
3011.76:246:06

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.39 kWh/m².

For context, solar energy here swings from a low near 2.66 kWh/m² to a high of 5.92 kWh/m² in May across the year — September's 4.39 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.6Bright
44.6Bright
54.6Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.4Bright
134.4Bright
144.4Bright
154.4Bright
164.4Bright
174.4Bright
184.4Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.2Bright
274.2Bright
284.2Bright
294.2Bright
304.2Bright
Planning a trip in September

Hazard calendar for Kyosai

In seasonPeak

In September, Kyosai sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.

Kyosai sits in the Pacific typhoon belt; the season peaks July–October.

Kyosai's rainy season runs April–September, when most of the year's rain falls.

Pacific typhoon
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Kyosai?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.0
Sightseeing
2nd-best month of the year
5.8
Beach & pool
2nd-best month of the year

September is one of the better times to visit Kyosai for general sightseeing.

What to pack for Kyosai in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Kyosai sees daytime highs around 24°C and nights near 22°C. Worth packing: light clothes, rain gear and a windbreaker. About 9 days see rain.

light clothesrain geara windbreaker

Sea temperature near Kyosai in September

The nearest coast averages about 25°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 25 km away) is warmest in August at about 26°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 17 to Nov 3 — about 4.6 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb13Bracing
Mar13Bracing
Apr14Bracing
May16Cool
Jun20Cool
Jul23Refreshing
Aug26Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Kyosai in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kyosai peaks around August 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 19UV 9Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar6High
Apr7High
May8Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep9Very high
Oct5High
Nov4Moderate
Dec2Moderate

Air quality in Kyosai in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Kyosai is worst in March — around 39 µg/m³ PM2.5 (poor), about 2.1× the cleanest month (September, 18 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMar 2439 µg/m³Sep 2018 µg/m³
PM2.5 (µg/m³)Level
Jan25Moderate
Feb30Moderate
Mar39Poor
Apr39Poor
May36Poor
Jun28Moderate
Jul22Moderate
Aug21Moderate
Sep18Moderate
Oct19Moderate
Nov23Moderate
Dec21Moderate
Location & terrain

Where is Kyosai?

Kyosai sits at 34.9°N, 128.6°E, 11 m above sea level, in South Korea. The nearest listed city is Sinhyeon, 5.0 km away.

ChangwonNaesŏBusanKimhae

Topography around Kyosai

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Kyosai.

Within 3 km, the terrain around Kyosai has significant variations in elevation — a maximum elevation change of 557 m around an average of 87 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 581 m; within 80 km, large variations in elevation — a maximum elevation change of 924 m.

The land around Kyosai is covered by trees (49%) and water (21%) within 3 km, water (47%) and trees (42%) within 16 km, and water (57%) and trees (32%) within 80 km.

3 km
557 m
16 km
581 m
80 km
924 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Sinhyeon 5.0 km · Geoje 11 km · Tongyeong 15 km · Goseong 28 km · Changwon 43 km · Naesŏ 45 km · Busan 49 km · Kimhae 50 km

South Korea travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
220 V · 60 Hz
Prices
≈ 57% of US
price level, 2025
GDP per capita
$36,227
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.5
per 100k, 2023
Road deaths
8.6
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 522
Religion
none 60%Protestant 17%Buddhist 16%Catholic 6%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Kyosai (34.8503°, 128.5886°, elevation 11 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).